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ON

ASTRONOMY,

IN WHICH THE

ELEMENTS OF THE SCIENCE

ARE

FAMILIALRY EXPLAINED IN CONNECTION WITH BIOGRAPHICAL

SKETCHES OF THE MOST EMINENT ASTRONOMERS.

WITH NUMEROUS ENGRAVINGS.

By DENISON OLMSTED, LL.D.,

PROFESSOR OF NATURAL PHILOSOPHY AND ASTRONOMY IN YALE COLLEGB

Bevised Edition.

INCLUDING THE LATEST DISCOVERIES.

NEW YORK:

HARPER & BROTHERS, PUBLISHERS,

3 29 & 331 PEARL STREET,

FRANKLIN SQUARE

1855.

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[graphic]

Sunvelli H. Noicidas

Entered according to Act of Congress, in the year 1840, by

MARSH, CAPEN, LYON, AND WEBP, in the Clerk's Office of the District Court of Massachusette.

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